Six-membered Rings with Two or More Heteroatoms with at least One Phosphorus

Seven-membered Pd(II) complexes containing symmetric phosphorus ylides: Synthesis, characterization and high catalytic activity toward Suzuki cross-coupling reactions

“…They coordinate to palladium(II) to form chelate ylide complexes of the type PdCl 2 (Y) (Y = chelate ylide) with a seven-membered chelate ring [17]. However, the synthesis of cyclic bisylides, and the study of their complexation to transition metals, is a less documented field and very few examples have been reported in the literature [27][28][29], in spite of their practical importance [30,31]. Palladium catalysis is ubiquitous in modern organic chemistry and a great number of catalytic systems have been designed and finetuned through careful ligand design and choice of experimental conditions (solvent, temperature, catalyst loading, etc.).…”